Direct and reverse driving mechanism.



P. ENGLISH. DIRECT AND REVERSE DRIVING MECHANISM.

APPLICATION FILED DEG. 21,1910.

1,006,638. Patented Oct. .24, 1911.

1 I 9 W229 eases: Evezzar:

M fez erzizgials/E 6.34 15 70 UNITED STATES PATENT OFFICE.

PETER ENGLISH, OF SAN FRANCISCO, CALIFORNIA.

DIRECT AND REVERSE DRIVING MECHANISM.

Specification of Letters Patent.

Patented Oct. 24, 1911.

Application filed December 27, 1910. Serial No. 599,463.

verse driving mechanism, and particularly pertains to a device forchanging the direction of rotation of a propeller shaft.

It is the object of this invention to provide a simple and practicalmeans for changing the direction of rotation of a driven shaft from adriving shaft, and by means of which a driven shaft can be thrown in orout of operative connection with the driving shaft, either from thestraight-ahead or from the reverse rotation.

The invention consists of the parts and the combination and constructionof parts as hereinafter more fully described and claimed, havingreference to the accompanying drawings, in which Figure 1 is ahorizontal sectional view of the invention, showing parts in elevation.Fig. 2 is a vertical section of the invention on the line X-X, Fig. 1,partly in elevation. Fig. 3 is a fragmentary side elevation, partly insection. Fig. 4 is a vertical section on the line YY, Fig. 2.

In the drawings, A represents the driving shaft, which is supported atits outer end in a bearing 2, on a bed-plate 3. This driving shaft A isadapted to bedriven directly or indirectly by a motor or engine of anysuitable type or construction. The outer end of the driving shaft Aextends beyond the bearings 2, and has a fly wheel clutch member 4mounted thereon, the fly wheel 4 being keyed to the shaft A to rotatetherewith. The outer face of the fly wheel 4 is recessed at 5 to receivea male clutch member 6, which is beveled on its periphery in the form ofa truncated cone, the conical peripheral surface of the clutch member 6conforming to a corresponding bevel on the inner arcual surface of therim of the recess 5.

The clutch member 6 has a hub 7 formed on its inner face, through whicha centrally disposed bore 8 extends longitudinally. The forward half ofthe bore 8 is circular to receive the outer end of the driving shaft A,which is revoluble therein, and

the outer portion of the bore 8 is rectangular in cross section toreceive the rectangular inner end of a driven shaft B, and is slidablelongitudinally thereon. This driven shaft B is mounted in a bearing 2 onthe bed-plate 3 and is designed to operate a pro peller of any suitabledescription, or any other machinery or devices, as may be desired.

Rigidly mounted near the inner end of the driven shaft B on therectangular portion thereof, is a disk 9, which is designed to be thrownin or out of frictional engagement with the fly wheel clutch 4, as willbe later described. A stiff coil spring 10 wound on the rectangularportion of the driven shaft B, is disposed between the in ner face ofthe disk 9 and the outer end of the hub 7 on the clutch member 6. Thisspring 10 normally tends to retain the clutch member 6 in frictionalengagement with the fly wheel clutch 4.

From the foregoing, it will be seen that -when the clutch member 6 isnormally engaged with the fly wheel clutch 4, as just described, and asshown in Fig. 1 of the drawings, the rotation of the shaft A will betransmitted directly to the shaft B by reason of the frictionalengagement between the clutch members 4 and 6, and the keyed connectionbetween the clutch 6 and the shaft B. The rectangular portion of theshaft B extending into the rectangular recess in the clutch 6 insuresthe shaft B and the clutch member 6 rotating in unison.

Means are provided for throwing the clutch member 6 on the shaft B outof engagement with the fly wheel clutch member 4 on the shaft A and tothrow the disk 9 into frictional engagement with the cones 11-11 so asto reverse the direction of rotation of the driven shaft B. This meansconsists of oppositely disposed cones 11 and 11, which extend betweenthe disk 9 and the fly wheel clutch 4, the outer portion of the innerfaces of the fly wheel clutch 4 and the disk 9 being beveled tocorrespond to the taper of the cones 11 and 11. These cones 11 and 11are revolubly mounted on studs 12 and 12, mounted on standards 13 and 13formed on the bed-plate 3, and have hubs formed on their outer ends onwhich loose sleeves 14 and 14 are mounted and held in place on the hubsby collars 15 and 15. Laterally extending and oppositely disposed pins15 are mounted on the sleeves l4 and 14 and engage with yokes 16 and 16which are mounted on the upper ends of arms 17 and 17 pivoted at 18 attheir lower ends to an upwardly extending rib formed on the bed-plate 3.The arm 17 is connected by a link 18 to an upwardly extending arm 19 ona bellcrank lever 20 which is fulcrumed at 21, and the arm 17' isconnected by a link 22 to a downwardly extending arm 19 on thebell-crank lever 20.

Formed on the inner end of each beveled frictional gear 11 and 11' is ahub 23, in

' which is fitted a stem 24, formed on a beveled roller 25. The stem 24is held in position in the hub 23 by means of a screw which extends intoa peripheral channel in the stem 24. This construction admits of thebeveled roller 25 and its stem 24 rotating freely within the hub 23, andpreventing the roller 25 and stem 24 from being disconnected from thehub 28. The beveled rollers 25 normally extend into close proximity toand just out of contact with a beveled flange 26 formed on the outer endof the hub 7 on the clutch member 6.

As before stated, the shaft B is normally engaged with the driving shaftA by means of the frictional clutch members 4 and 6,

and when thus connected the driven shaft B will be rotated in unisonwith, and in the same direction as, the shaft A. To reverse a thedirection of rotation of the shaft B the to throw the latter intofrictional engagement with the beveled faces on the disk 9 and the flywheel 4. Simultaneous with this action the link 22 will pull upon thelever 17 so as to throw the friction cone 11 i into engagement with thedisk 9 and the fly wheel 4. As the friction conesll and 11 moveinwardly, the beveled rollers 25 come into contact with beveled flanges26. A continued inward movement of the cones 11 and 11 causes the roller25 to act on the flange 26, on the principle of a wedge, to move thefrictional clutch 6 backward on the rectangular portion of the shaft Bin opposition to the spring 10, thus throwing the clutch 6 out ofengagement with the fly wheel 4. A further continued inward movement ofthe cones 11 and 11 causes them to come in contact with and befrictionally engage-d by the disk 9 and fly wheel 4 so as to 7 cause theformer to be rotated in a direction opposite to that of the latter,thereby reversing the direction of rotation of the driven v shaft B.

The rollers 25 are normally disposed in Closer proximity to the flange26 than the member 6 may be thrown out of contact with the fly wheel 4before the frictional gears 11 and 11' are in operative engagement withthe disk 9 and the flywheel 4. This permits ofthe driven shaft B beingthrown out of operative connection with the drive shaft A.

End-thrust bearings 27 are disposed between the disk 9 and the bearings2 and similar end-thrust bearings 27 are disposed between the fly wheel4 and the bearings 2.

The purposeof these hearings is to take up end-thrusts of the disk 9 andthe fly wheel 4 as is common in frictional disk construction.

In the application of this invention as just described, the clutchmember 6 is normally engaged with the fly wheel 4 for a straightaheaddrive of the shaft B, a reversal of the shaft B being obtained bythrowing in the frictional cones 11 and 11. It is obvious, however, thatthe opposite arrangement may be employed if desired; that is to say, thestraight-ahead drive may be obtained by normally disposing thefrictional cones 11 and 11 in engagement with the disk 9 and fly wheel4. In this case, a reversal of the direction of rotation of the shaft Bwill be obtained by throwing out the friction cones 11 and 11 so as tocause the spring 10 to automatically throw the clutch 6 into engagementwith the fly wheel 4.

Having thus described my invention, what I claim and desire to secure byLetters-Patent, is-

1. The combination with a drive shaft and a driven shaft, of a fly-wheelon the drive shaft, a friction clutch member on the driven shaftnormally engaged with the fly-wheel, a friction disk on the drivenshaft, friction cones disposed between said friction disk and said flywheel out of contact therewith, means for throwing said friction conesinto engagement with the fly wheel and friction disk, and means on saidcones for throwing the friction clutch member out of engagement with thefly wheel.

2. The combination with a drive shaft and a driven shaft disposed in lonitudinal alinement, of a fly wheel on the drive shaft having a recesstherein and a beveled surface adjacent its perimeter, a friction clutchmember slidable on the driven shaft and rotatable therewith, yieldablemeans for normally retaining said clutch member in the recess in the flywheel and in e11- gagement with the sides thereof, a friction disk onthe driven shaft, and oppositely disposed friction cones between saidfriction disk and the beveled surface of the fly wheel.

3. The combination with a drive shaft and a driven shaft disposed inlongitudinal alinement, of a fly wheel on the drive shaft having arecess therein and a beveled surface adjacent its perimeter, a frictionclutch member slidable on the driven shaft and rotatable therewith,yieldable means for normally retaining said clutch member in the recessin the fly wheel and in engagement with the sides thereof, a frictiondisk on the driven shaft, oppositely disposed friction cones betweensaid friction disk and the beveled surface of the fly wheel, means formoving said cones into engagement with the fly wheel and friction disk,and means on said cones for throwing the friction clutch member out ofengagement with the fly wheel.

4. The combination with a drive shaft and a driven shaft disposed inlongitudinal alinement, of a fly Wheel on the drive shaft having arecess therein and a beveled surface adjacent its perimeter, a frictionclutch member slidable on the driven shaft and rotatable therewith, aspring on the driven shaft to normally retain the clutch member inengagement with the fly wheel, a friction disk on the driven shaft, apair of friction cones, tapered rollers on said cones, means forthrowing said cones into engagement with the fly wheel and the frictiondisk, and means cooperating with said tapered rollers to disengage saidclutch member from said fly wheel when the friction cones are inoperative engagement.

5. The combination with a drive shaft and a driven shaft, of a fly wheelon the drive shaft, a friction clutch member on the driven shaft and afriction disk fixed on the driven shaft, means for normally engagingsaid clutch to said fly wheel to rotate the driven shaft in onedirection, friction cones, means for engaging said cones to the flywheel to reverse the direction of rotation of the driven shaft, andmeans on said cones for disengaging the friction clutch.

6. The combination of a drive shaft, a driven shaft, bearings supportingthe ends of said shafts, a bed-plate on which the bearings are mounted,a fly-wheel on the drive shaft, having a recessed portion and a beveledportion, a flanged friction clutch member on the driven shaft normallyengaging the fly wheel to rotate the driven shaft in one direction, afriction disk on the driven shaft, friction cones, spindles on whichthey are mounted and support-ing standards on said bed plate, beveledrollers on said friction cones adapted to bear against the flange formedon the friction clutch member, and means for shifting said cones on thespindles.

7 The combination of a drive shaft, a driven shaft, bearings supportingthe ends of said shafts, a bed-plate on which the bearings are mounted,a fly-wheel on the drive shaft, having a recessed portion and a beveledportion, a flanged friction clutch member on the driven shaft normallyengaging the fly wheel to rotate the driven shaft in one direction, afriction disk on the driven shaft, friction cones, spindles on whichthey are mounted, supporting standards on said bed plate, beveledrollers on said friction cones adapted to bear against the flange formedon the friction clutch member, means for shifting said cones on thespindles, said means embodying straps on the cones, rocking levers towhich they are pivoted, a bell crank lever and links connecting saidlevers to oppositely disposed arms on said bell crank lever.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing Witnesses.

PETER ENGLISH.

Witnesses:

CHARLES EDELMAN, A. P. LA'rHRoP.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

